After spending years in seclusion, Michael Jackson is back in the public eye in a big way, thanks to a record-breaking 50 sellouts for his upcoming shows at London’s O2 Arena — not to mention a Michael Jackson theme night on “American Idol.” One of the few stars who can match the King Of Pop’s longevity is Cher, who still performs in Las Vegas despite embarking on her own “farewell tour” several years ago. The two stars’ paths first crossed nearly 40 years ago, when Cher worked with Michael and his brothers on a medley of their hits. For Cher, keeping up with the Jackson 5 was a pretty challenging task! She shared her memories of working on that routine with them. (CLICK ON THE MEDIA BAR BELOW THE VIDEO TO HEAR CHER)